Mercury MerCruiser Quicksilver Rear Crankshaft Oil Seal 75585
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Product Description
Mercury MerCruiser Quicksilver 26-75585 is a legacy rear crankshaft-bearing-cap oil seal for specified GM 454 cu. in. MerCruiser engines. The 330 MIE piston-and-crankshaft diagram identifies it for the left-hand-rotation engine arrangement.
Key Features
- Legacy Mercury oil-seal reference: 26-75585.
- Rear crankshaft / rear main-bearing-cap location.
- Catalog replacement references include 26-14756 and the later 26-8M0062773.
Engine Compatibility
Verified application: MerCruiser 330 MIE, GM 454 V8, 1977–1980, serial numbers 4623115 through 5889913, in the left-hand-rotation configuration shown in the parts diagram. Confirm the engine generation, rotation and rear-seal design before ordering.
Replacement and Installation
Investigate the source of an oil leak before replacing the rear seal. Inspect the crankshaft sealing surface and bearing-cap joint, then follow the engine manual for seal orientation, joint preparation and assembly sequence.
Parts Desk Insight
Big-block rear seals vary with engine generation and rotation. Match the exact crankshaft diagram rather than ordering only by 7.4L displacement.
Manufacturer Parts Lookup
Use Mercury’s official parts finder to check the part against your engine or drive serial number.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.